yarn spining does not need power.

When you play it, it makes sound "Wing" "Wing"

Step 1: 3D Modeling

1. Modeling

- Tinkercad program

- The size is adjustable.

- Modeling files are attached.

Step 2: Prepare Matirial

1. Prepare tools for trimming holes.

2. Body, Led(4ea), button cell (1ea), yarn (1M), Nipper

3. Cut a Led leg to fit length.

4. Pass the Yarn through the body center hole.

5. Put the Led, button cell

6. Cover the body.

1. Hold both sides and return for about 30 seconds.

2. Pull both sides.

3. It can be repeated indefinitely.